. 2010 Jul;83(1):126–134. doi: 10.4269/ajtmh.2010.09-0776

Table 3.

The mean titers (logs plaque-forming units WNV/mL) ± standard errors, infection rates, and dissemination rates for Cx. p. quinquefasciatus fed blood meals containing a low or high dose at different ages and tested after a 13-day incubation period at 25°C

Mosquito age	No. tested	No. infected (%)^*	No. disseminated (%)^*	Body titer^†	Leg titer^†
1995 Colony—low dose
Young	76	31 (41)^a	2 (6)^a	4.2 ± 0.1^hijk	2.2 ± 0.9^e
Middle-aged	109	44 (40)^a	3 (7)^a	3.8 ± 0.1^jk	2.7 ± 0.2^abcde
Old	88	26 (30)^a	0 (0)^a	4.2 ± 0.1^hijk	–
1995 Colony—high dose
Young	101	76 (75)^a	11 (14)^b	4.3 ± 0.1^hijk	3.2 ± 0.3^abcde
Middle-aged	109	64 (59)^b	24 (38)^a	5.3 ± 0.1^abcd	3.0 ± 0.2^abcde
Old	98	81 (83)^a	8 (10)^b	5.1 ± 0.1^cde	3.9 ± 0.7^abc
2007 Colony—low dose
Young	100	57 (57)^b	1 (2)^b	4.9 ± 0.2^def	3.8^abcd
Middle-aged	100	69 (69)^b	18 (26)^a	4.6 ± 0.1^efgh	2.9 ± 0.3^abcde
Old	76	57 (75)^a	7 (12)^b	4.9 ± 0.2^def	3.8 ± 0.4^abcd
2007 Colony—high dose
Young	49	22 (45)^a	3 (14)^a	3.7 ± 0.2^lk	2.3 ± 0.1^de
Middle-aged	50	28 (56)^a	3 (11)^a	3.3 ± 0.3^l	2.5 ± 0.7^cde
Old	49	14 (29)^b	4 (29)^a	4.0 ± 0.4^ijk	2.5 ± 0.2^cde

Treatment groups with the same letter in the same column for each colony-dose group are not significantly different between ages by χ² test.

^†

Treatment groups with the same letter in the same column are not significantly different by means comparisons across Tables 3 and 4.